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56d1c78d JB |
1 | /************************************************************************** |
2 | * | |
3 | * Copyright © 2011 VMware, Inc., Palo Alto, CA., USA | |
4 | * All Rights Reserved. | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a | |
7 | * copy of this software and associated documentation files (the | |
8 | * "Software"), to deal in the Software without restriction, including | |
9 | * without limitation the rights to use, copy, modify, merge, publish, | |
10 | * distribute, sub license, and/or sell copies of the Software, and to | |
11 | * permit persons to whom the Software is furnished to do so, subject to | |
12 | * the following conditions: | |
13 | * | |
14 | * The above copyright notice and this permission notice (including the | |
15 | * next paragraph) shall be included in all copies or substantial portions | |
16 | * of the Software. | |
17 | * | |
18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
19 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
20 | * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL | |
21 | * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, | |
22 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
23 | * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
24 | * USE OR OTHER DEALINGS IN THE SOFTWARE. | |
25 | * | |
26 | **************************************************************************/ | |
27 | ||
28 | #include "vmwgfx_kms.h" | |
29 | ||
30 | ||
31 | #define vmw_crtc_to_sou(x) \ | |
32 | container_of(x, struct vmw_screen_object_unit, base.crtc) | |
33 | #define vmw_encoder_to_sou(x) \ | |
34 | container_of(x, struct vmw_screen_object_unit, base.encoder) | |
35 | #define vmw_connector_to_sou(x) \ | |
36 | container_of(x, struct vmw_screen_object_unit, base.connector) | |
37 | ||
38 | struct vmw_screen_object_display { | |
6987427a | 39 | unsigned num_implicit; |
56d1c78d | 40 | |
6987427a | 41 | struct vmw_framebuffer *implicit_fb; |
56d1c78d JB |
42 | }; |
43 | ||
44 | /** | |
45 | * Display unit using screen objects. | |
46 | */ | |
47 | struct vmw_screen_object_unit { | |
48 | struct vmw_display_unit base; | |
49 | ||
50 | unsigned long buffer_size; /**< Size of allocated buffer */ | |
51 | struct vmw_dma_buffer *buffer; /**< Backing store buffer */ | |
52 | ||
53 | bool defined; | |
6987427a | 54 | bool active_implicit; |
56d1c78d JB |
55 | }; |
56 | ||
57 | static void vmw_sou_destroy(struct vmw_screen_object_unit *sou) | |
58 | { | |
56d1c78d JB |
59 | vmw_display_unit_cleanup(&sou->base); |
60 | kfree(sou); | |
61 | } | |
62 | ||
63 | ||
64 | /* | |
65 | * Screen Object Display Unit CRTC functions | |
66 | */ | |
67 | ||
68 | static void vmw_sou_crtc_destroy(struct drm_crtc *crtc) | |
69 | { | |
70 | vmw_sou_destroy(vmw_crtc_to_sou(crtc)); | |
71 | } | |
72 | ||
0e708bc5 | 73 | static void vmw_sou_del_active(struct vmw_private *vmw_priv, |
56d1c78d JB |
74 | struct vmw_screen_object_unit *sou) |
75 | { | |
76 | struct vmw_screen_object_display *ld = vmw_priv->sou_priv; | |
56d1c78d | 77 | |
6987427a TH |
78 | if (sou->active_implicit) { |
79 | if (--(ld->num_implicit) == 0) | |
80 | ld->implicit_fb = NULL; | |
81 | sou->active_implicit = false; | |
0e708bc5 | 82 | } |
56d1c78d JB |
83 | } |
84 | ||
0e708bc5 | 85 | static void vmw_sou_add_active(struct vmw_private *vmw_priv, |
56d1c78d JB |
86 | struct vmw_screen_object_unit *sou, |
87 | struct vmw_framebuffer *vfb) | |
88 | { | |
89 | struct vmw_screen_object_display *ld = vmw_priv->sou_priv; | |
56d1c78d | 90 | |
6987427a | 91 | BUG_ON(!ld->num_implicit && ld->implicit_fb); |
56d1c78d | 92 | |
6987427a TH |
93 | if (!sou->active_implicit && sou->base.is_implicit) { |
94 | ld->implicit_fb = vfb; | |
95 | sou->active_implicit = true; | |
96 | ld->num_implicit++; | |
56d1c78d | 97 | } |
56d1c78d JB |
98 | } |
99 | ||
100 | /** | |
101 | * Send the fifo command to create a screen. | |
102 | */ | |
103 | static int vmw_sou_fifo_create(struct vmw_private *dev_priv, | |
104 | struct vmw_screen_object_unit *sou, | |
105 | uint32_t x, uint32_t y, | |
106 | struct drm_display_mode *mode) | |
107 | { | |
108 | size_t fifo_size; | |
109 | ||
110 | struct { | |
111 | struct { | |
112 | uint32_t cmdType; | |
113 | } header; | |
114 | SVGAScreenObject obj; | |
115 | } *cmd; | |
116 | ||
117 | BUG_ON(!sou->buffer); | |
118 | ||
119 | fifo_size = sizeof(*cmd); | |
120 | cmd = vmw_fifo_reserve(dev_priv, fifo_size); | |
121 | /* The hardware has hung, nothing we can do about it here. */ | |
122 | if (unlikely(cmd == NULL)) { | |
123 | DRM_ERROR("Fifo reserve failed.\n"); | |
124 | return -ENOMEM; | |
125 | } | |
126 | ||
127 | memset(cmd, 0, fifo_size); | |
128 | cmd->header.cmdType = SVGA_CMD_DEFINE_SCREEN; | |
129 | cmd->obj.structSize = sizeof(SVGAScreenObject); | |
130 | cmd->obj.id = sou->base.unit; | |
131 | cmd->obj.flags = SVGA_SCREEN_HAS_ROOT | | |
132 | (sou->base.unit == 0 ? SVGA_SCREEN_IS_PRIMARY : 0); | |
133 | cmd->obj.size.width = mode->hdisplay; | |
134 | cmd->obj.size.height = mode->vdisplay; | |
6987427a TH |
135 | if (sou->base.is_implicit) { |
136 | cmd->obj.root.x = x; | |
137 | cmd->obj.root.y = y; | |
138 | } else { | |
139 | cmd->obj.root.x = sou->base.gui_x; | |
140 | cmd->obj.root.y = sou->base.gui_y; | |
141 | } | |
56d1c78d JB |
142 | |
143 | /* Ok to assume that buffer is pinned in vram */ | |
b37a6b9a | 144 | vmw_bo_get_guest_ptr(&sou->buffer->base, &cmd->obj.backingStore.ptr); |
56d1c78d JB |
145 | cmd->obj.backingStore.pitch = mode->hdisplay * 4; |
146 | ||
147 | vmw_fifo_commit(dev_priv, fifo_size); | |
148 | ||
149 | sou->defined = true; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | /** | |
155 | * Send the fifo command to destroy a screen. | |
156 | */ | |
157 | static int vmw_sou_fifo_destroy(struct vmw_private *dev_priv, | |
158 | struct vmw_screen_object_unit *sou) | |
159 | { | |
160 | size_t fifo_size; | |
161 | int ret; | |
162 | ||
163 | struct { | |
164 | struct { | |
165 | uint32_t cmdType; | |
166 | } header; | |
167 | SVGAFifoCmdDestroyScreen body; | |
168 | } *cmd; | |
169 | ||
170 | /* no need to do anything */ | |
171 | if (unlikely(!sou->defined)) | |
172 | return 0; | |
173 | ||
174 | fifo_size = sizeof(*cmd); | |
175 | cmd = vmw_fifo_reserve(dev_priv, fifo_size); | |
176 | /* the hardware has hung, nothing we can do about it here */ | |
177 | if (unlikely(cmd == NULL)) { | |
178 | DRM_ERROR("Fifo reserve failed.\n"); | |
179 | return -ENOMEM; | |
180 | } | |
181 | ||
182 | memset(cmd, 0, fifo_size); | |
183 | cmd->header.cmdType = SVGA_CMD_DESTROY_SCREEN; | |
184 | cmd->body.screenId = sou->base.unit; | |
185 | ||
186 | vmw_fifo_commit(dev_priv, fifo_size); | |
187 | ||
188 | /* Force sync */ | |
189 | ret = vmw_fallback_wait(dev_priv, false, true, 0, false, 3*HZ); | |
190 | if (unlikely(ret != 0)) | |
191 | DRM_ERROR("Failed to sync with HW"); | |
192 | else | |
193 | sou->defined = false; | |
194 | ||
195 | return ret; | |
196 | } | |
197 | ||
198 | /** | |
199 | * Free the backing store. | |
200 | */ | |
201 | static void vmw_sou_backing_free(struct vmw_private *dev_priv, | |
202 | struct vmw_screen_object_unit *sou) | |
203 | { | |
204 | struct ttm_buffer_object *bo; | |
205 | ||
206 | if (unlikely(sou->buffer == NULL)) | |
207 | return; | |
208 | ||
209 | bo = &sou->buffer->base; | |
210 | ttm_bo_unref(&bo); | |
211 | sou->buffer = NULL; | |
212 | sou->buffer_size = 0; | |
213 | } | |
214 | ||
215 | /** | |
216 | * Allocate the backing store for the buffer. | |
217 | */ | |
218 | static int vmw_sou_backing_alloc(struct vmw_private *dev_priv, | |
219 | struct vmw_screen_object_unit *sou, | |
220 | unsigned long size) | |
221 | { | |
222 | int ret; | |
223 | ||
224 | if (sou->buffer_size == size) | |
225 | return 0; | |
226 | ||
227 | if (sou->buffer) | |
228 | vmw_sou_backing_free(dev_priv, sou); | |
229 | ||
230 | sou->buffer = kzalloc(sizeof(*sou->buffer), GFP_KERNEL); | |
231 | if (unlikely(sou->buffer == NULL)) | |
232 | return -ENOMEM; | |
233 | ||
234 | /* After we have alloced the backing store might not be able to | |
235 | * resume the overlays, this is preferred to failing to alloc. | |
236 | */ | |
237 | vmw_overlay_pause_all(dev_priv); | |
238 | ret = vmw_dmabuf_init(dev_priv, sou->buffer, size, | |
239 | &vmw_vram_ne_placement, | |
240 | false, &vmw_dmabuf_bo_free); | |
241 | vmw_overlay_resume_all(dev_priv); | |
242 | ||
243 | if (unlikely(ret != 0)) | |
244 | sou->buffer = NULL; /* vmw_dmabuf_init frees on error */ | |
245 | else | |
246 | sou->buffer_size = size; | |
247 | ||
248 | return ret; | |
249 | } | |
250 | ||
251 | static int vmw_sou_crtc_set_config(struct drm_mode_set *set) | |
252 | { | |
253 | struct vmw_private *dev_priv; | |
254 | struct vmw_screen_object_unit *sou; | |
255 | struct drm_connector *connector; | |
256 | struct drm_display_mode *mode; | |
257 | struct drm_encoder *encoder; | |
258 | struct vmw_framebuffer *vfb; | |
259 | struct drm_framebuffer *fb; | |
260 | struct drm_crtc *crtc; | |
261 | int ret = 0; | |
262 | ||
263 | if (!set) | |
264 | return -EINVAL; | |
265 | ||
266 | if (!set->crtc) | |
267 | return -EINVAL; | |
268 | ||
269 | /* get the sou */ | |
270 | crtc = set->crtc; | |
271 | sou = vmw_crtc_to_sou(crtc); | |
272 | vfb = set->fb ? vmw_framebuffer_to_vfb(set->fb) : NULL; | |
273 | dev_priv = vmw_priv(crtc->dev); | |
274 | ||
275 | if (set->num_connectors > 1) { | |
276 | DRM_ERROR("to many connectors\n"); | |
277 | return -EINVAL; | |
278 | } | |
279 | ||
280 | if (set->num_connectors == 1 && | |
281 | set->connectors[0] != &sou->base.connector) { | |
282 | DRM_ERROR("connector doesn't match %p %p\n", | |
283 | set->connectors[0], &sou->base.connector); | |
284 | return -EINVAL; | |
285 | } | |
286 | ||
287 | /* sou only supports one fb active at the time */ | |
6987427a TH |
288 | if (sou->base.is_implicit && |
289 | dev_priv->sou_priv->implicit_fb && vfb && | |
290 | !(dev_priv->sou_priv->num_implicit == 1 && | |
291 | sou->active_implicit) && | |
292 | dev_priv->sou_priv->implicit_fb != vfb) { | |
56d1c78d JB |
293 | DRM_ERROR("Multiple framebuffers not supported\n"); |
294 | return -EINVAL; | |
295 | } | |
296 | ||
297 | /* since they always map one to one these are safe */ | |
298 | connector = &sou->base.connector; | |
299 | encoder = &sou->base.encoder; | |
300 | ||
301 | /* should we turn the crtc off */ | |
302 | if (set->num_connectors == 0 || !set->mode || !set->fb) { | |
303 | ret = vmw_sou_fifo_destroy(dev_priv, sou); | |
304 | /* the hardware has hung don't do anything more */ | |
305 | if (unlikely(ret != 0)) | |
306 | return ret; | |
307 | ||
308 | connector->encoder = NULL; | |
309 | encoder->crtc = NULL; | |
f4510a27 | 310 | crtc->primary->fb = NULL; |
56d1c78d JB |
311 | crtc->x = 0; |
312 | crtc->y = 0; | |
c6c1f325 | 313 | crtc->enabled = false; |
56d1c78d JB |
314 | |
315 | vmw_sou_del_active(dev_priv, sou); | |
316 | ||
317 | vmw_sou_backing_free(dev_priv, sou); | |
318 | ||
319 | return 0; | |
320 | } | |
321 | ||
322 | ||
323 | /* we now know we want to set a mode */ | |
324 | mode = set->mode; | |
325 | fb = set->fb; | |
326 | ||
327 | if (set->x + mode->hdisplay > fb->width || | |
328 | set->y + mode->vdisplay > fb->height) { | |
329 | DRM_ERROR("set outside of framebuffer\n"); | |
330 | return -EINVAL; | |
331 | } | |
332 | ||
333 | vmw_fb_off(dev_priv); | |
334 | ||
335 | if (mode->hdisplay != crtc->mode.hdisplay || | |
336 | mode->vdisplay != crtc->mode.vdisplay) { | |
337 | /* no need to check if depth is different, because backing | |
338 | * store depth is forced to 4 by the device. | |
339 | */ | |
340 | ||
341 | ret = vmw_sou_fifo_destroy(dev_priv, sou); | |
342 | /* the hardware has hung don't do anything more */ | |
343 | if (unlikely(ret != 0)) | |
344 | return ret; | |
345 | ||
346 | vmw_sou_backing_free(dev_priv, sou); | |
347 | } | |
348 | ||
349 | if (!sou->buffer) { | |
350 | /* forced to depth 4 by the device */ | |
351 | size_t size = mode->hdisplay * mode->vdisplay * 4; | |
352 | ret = vmw_sou_backing_alloc(dev_priv, sou, size); | |
353 | if (unlikely(ret != 0)) | |
354 | return ret; | |
355 | } | |
356 | ||
357 | ret = vmw_sou_fifo_create(dev_priv, sou, set->x, set->y, mode); | |
358 | if (unlikely(ret != 0)) { | |
359 | /* | |
360 | * We are in a bit of a situation here, the hardware has | |
361 | * hung and we may or may not have a buffer hanging of | |
362 | * the screen object, best thing to do is not do anything | |
363 | * if we where defined, if not just turn the crtc of. | |
364 | * Not what userspace wants but it needs to htfu. | |
365 | */ | |
366 | if (sou->defined) | |
367 | return ret; | |
368 | ||
369 | connector->encoder = NULL; | |
370 | encoder->crtc = NULL; | |
f4510a27 | 371 | crtc->primary->fb = NULL; |
56d1c78d JB |
372 | crtc->x = 0; |
373 | crtc->y = 0; | |
c6c1f325 | 374 | crtc->enabled = false; |
56d1c78d JB |
375 | |
376 | return ret; | |
377 | } | |
378 | ||
379 | vmw_sou_add_active(dev_priv, sou, vfb); | |
380 | ||
381 | connector->encoder = encoder; | |
382 | encoder->crtc = crtc; | |
383 | crtc->mode = *mode; | |
f4510a27 | 384 | crtc->primary->fb = fb; |
56d1c78d JB |
385 | crtc->x = set->x; |
386 | crtc->y = set->y; | |
c6c1f325 | 387 | crtc->enabled = true; |
56d1c78d JB |
388 | |
389 | return 0; | |
390 | } | |
391 | ||
392 | static struct drm_crtc_funcs vmw_screen_object_crtc_funcs = { | |
393 | .save = vmw_du_crtc_save, | |
394 | .restore = vmw_du_crtc_restore, | |
395 | .cursor_set = vmw_du_crtc_cursor_set, | |
396 | .cursor_move = vmw_du_crtc_cursor_move, | |
397 | .gamma_set = vmw_du_crtc_gamma_set, | |
398 | .destroy = vmw_sou_crtc_destroy, | |
399 | .set_config = vmw_sou_crtc_set_config, | |
b5ec427e | 400 | .page_flip = vmw_du_page_flip, |
56d1c78d JB |
401 | }; |
402 | ||
403 | /* | |
404 | * Screen Object Display Unit encoder functions | |
405 | */ | |
406 | ||
407 | static void vmw_sou_encoder_destroy(struct drm_encoder *encoder) | |
408 | { | |
409 | vmw_sou_destroy(vmw_encoder_to_sou(encoder)); | |
410 | } | |
411 | ||
412 | static struct drm_encoder_funcs vmw_screen_object_encoder_funcs = { | |
413 | .destroy = vmw_sou_encoder_destroy, | |
414 | }; | |
415 | ||
416 | /* | |
417 | * Screen Object Display Unit connector functions | |
418 | */ | |
419 | ||
420 | static void vmw_sou_connector_destroy(struct drm_connector *connector) | |
421 | { | |
422 | vmw_sou_destroy(vmw_connector_to_sou(connector)); | |
423 | } | |
424 | ||
425 | static struct drm_connector_funcs vmw_legacy_connector_funcs = { | |
426 | .dpms = vmw_du_connector_dpms, | |
427 | .save = vmw_du_connector_save, | |
428 | .restore = vmw_du_connector_restore, | |
429 | .detect = vmw_du_connector_detect, | |
430 | .fill_modes = vmw_du_connector_fill_modes, | |
431 | .set_property = vmw_du_connector_set_property, | |
432 | .destroy = vmw_sou_connector_destroy, | |
433 | }; | |
434 | ||
435 | static int vmw_sou_init(struct vmw_private *dev_priv, unsigned unit) | |
436 | { | |
437 | struct vmw_screen_object_unit *sou; | |
438 | struct drm_device *dev = dev_priv->dev; | |
439 | struct drm_connector *connector; | |
440 | struct drm_encoder *encoder; | |
441 | struct drm_crtc *crtc; | |
442 | ||
443 | sou = kzalloc(sizeof(*sou), GFP_KERNEL); | |
444 | if (!sou) | |
445 | return -ENOMEM; | |
446 | ||
447 | sou->base.unit = unit; | |
448 | crtc = &sou->base.crtc; | |
449 | encoder = &sou->base.encoder; | |
450 | connector = &sou->base.connector; | |
451 | ||
6987427a | 452 | sou->active_implicit = false; |
56d1c78d JB |
453 | |
454 | sou->base.pref_active = (unit == 0); | |
eb4f923b JB |
455 | sou->base.pref_width = dev_priv->initial_width; |
456 | sou->base.pref_height = dev_priv->initial_height; | |
56d1c78d | 457 | sou->base.pref_mode = NULL; |
6987427a | 458 | sou->base.is_implicit = true; |
56d1c78d JB |
459 | |
460 | drm_connector_init(dev, connector, &vmw_legacy_connector_funcs, | |
305151e3 | 461 | DRM_MODE_CONNECTOR_VIRTUAL); |
56d1c78d JB |
462 | connector->status = vmw_du_connector_detect(connector, true); |
463 | ||
464 | drm_encoder_init(dev, encoder, &vmw_screen_object_encoder_funcs, | |
305151e3 | 465 | DRM_MODE_ENCODER_VIRTUAL); |
56d1c78d JB |
466 | drm_mode_connector_attach_encoder(connector, encoder); |
467 | encoder->possible_crtcs = (1 << unit); | |
468 | encoder->possible_clones = 0; | |
469 | ||
34ea3d38 | 470 | (void) drm_connector_register(connector); |
6a0a7a9e | 471 | |
56d1c78d JB |
472 | drm_crtc_init(dev, crtc, &vmw_screen_object_crtc_funcs); |
473 | ||
474 | drm_mode_crtc_set_gamma_size(crtc, 256); | |
475 | ||
b8b163ba | 476 | drm_object_attach_property(&connector->base, |
56d1c78d JB |
477 | dev->mode_config.dirty_info_property, |
478 | 1); | |
479 | ||
480 | return 0; | |
481 | } | |
482 | ||
483 | int vmw_kms_init_screen_object_display(struct vmw_private *dev_priv) | |
484 | { | |
485 | struct drm_device *dev = dev_priv->dev; | |
74b5ea30 | 486 | int i, ret; |
56d1c78d JB |
487 | |
488 | if (dev_priv->sou_priv) { | |
489 | DRM_INFO("sou system already on\n"); | |
490 | return -EINVAL; | |
491 | } | |
492 | ||
29a16e95 | 493 | if (!(dev_priv->capabilities & SVGA_CAP_SCREEN_OBJECT_2)) { |
56d1c78d JB |
494 | DRM_INFO("Not using screen objects," |
495 | " missing cap SCREEN_OBJECT_2\n"); | |
496 | return -ENOSYS; | |
497 | } | |
498 | ||
499 | ret = -ENOMEM; | |
500 | dev_priv->sou_priv = kmalloc(sizeof(*dev_priv->sou_priv), GFP_KERNEL); | |
501 | if (unlikely(!dev_priv->sou_priv)) | |
502 | goto err_no_mem; | |
503 | ||
6987427a TH |
504 | dev_priv->sou_priv->num_implicit = 0; |
505 | dev_priv->sou_priv->implicit_fb = NULL; | |
56d1c78d JB |
506 | |
507 | ret = drm_vblank_init(dev, VMWGFX_NUM_DISPLAY_UNITS); | |
508 | if (unlikely(ret != 0)) | |
509 | goto err_free; | |
510 | ||
74b5ea30 | 511 | ret = drm_mode_create_dirty_info_property(dev); |
56d1c78d JB |
512 | if (unlikely(ret != 0)) |
513 | goto err_vblank_cleanup; | |
514 | ||
515 | for (i = 0; i < VMWGFX_NUM_DISPLAY_UNITS; ++i) | |
516 | vmw_sou_init(dev_priv, i); | |
517 | ||
518 | DRM_INFO("Screen objects system initialized\n"); | |
519 | ||
520 | return 0; | |
521 | ||
522 | err_vblank_cleanup: | |
523 | drm_vblank_cleanup(dev); | |
524 | err_free: | |
525 | kfree(dev_priv->sou_priv); | |
60a16a30 | 526 | dev_priv->sou_priv = NULL; |
56d1c78d JB |
527 | err_no_mem: |
528 | return ret; | |
529 | } | |
530 | ||
531 | int vmw_kms_close_screen_object_display(struct vmw_private *dev_priv) | |
532 | { | |
533 | struct drm_device *dev = dev_priv->dev; | |
534 | ||
56d1c78d JB |
535 | if (!dev_priv->sou_priv) |
536 | return -ENOSYS; | |
537 | ||
60a16a30 JB |
538 | drm_vblank_cleanup(dev); |
539 | ||
56d1c78d JB |
540 | kfree(dev_priv->sou_priv); |
541 | ||
542 | return 0; | |
543 | } | |
b5ec427e JB |
544 | |
545 | /** | |
546 | * Returns if this unit can be page flipped. | |
547 | * Must be called with the mode_config mutex held. | |
548 | */ | |
549 | bool vmw_kms_screen_object_flippable(struct vmw_private *dev_priv, | |
550 | struct drm_crtc *crtc) | |
551 | { | |
552 | struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); | |
553 | ||
554 | if (!sou->base.is_implicit) | |
555 | return true; | |
556 | ||
557 | if (dev_priv->sou_priv->num_implicit != 1) | |
558 | return false; | |
559 | ||
560 | return true; | |
561 | } | |
562 | ||
563 | /** | |
564 | * Update the implicit fb to the current fb of this crtc. | |
565 | * Must be called with the mode_config mutex held. | |
566 | */ | |
567 | void vmw_kms_screen_object_update_implicit_fb(struct vmw_private *dev_priv, | |
568 | struct drm_crtc *crtc) | |
569 | { | |
570 | struct vmw_screen_object_unit *sou = vmw_crtc_to_sou(crtc); | |
571 | ||
572 | BUG_ON(!sou->base.is_implicit); | |
573 | ||
574 | dev_priv->sou_priv->implicit_fb = | |
f4510a27 | 575 | vmw_framebuffer_to_vfb(sou->base.crtc.primary->fb); |
b5ec427e | 576 | } |